Valve



Jul 12 192 y 7 J. sANDlLANDs INDICATING VALVE Filed oet. 25, 1924 rl lfl|11 lLll uumlr y Patented July 12, 1927.y i r 1,635,349*

"I FINDICATINGfvALVER I ;f .Appneatimiviea october-25,1924..-...4Seria1-nav/15,782... a

The object of my inventionA to devise 'extends-l'adjacentdtd-landt avalve, `which mayl'be'inser'ted in aiiy'pipe ledge 1 3.castfinntlie4kcasing and. forming av through which liquid' is flowing, adapted datumline. An opening 14 is formedv in f.

to give a visual indication of. the rate of the front of the casingwhich is closed by 60 5 flow and adapted to automatically drain the aglass plate 15, held in place by a ring 16,

pipe above the valve when the flow ceases threaded into an annularliangevl surroundv and the pipe below the valve drains back. ing theopening 14. The position ofthe in- I attain my object by means of thecon dicator relative to the datum line ,is thus structions hereinafterdescribed and illus# readily visible at any time from the front 65 1otrated in the accompanying drawings in of the valve. 'Io facilitateobservation', the which rim of the indicator and the .front edge of Fig.1 is a front elevation of my improved the ledge forming the datum lineare envalve; ainelled white. Fig. 2 a cross section of the same on theFrom the construction described, it fol'- 70 line 2-2 in Fig. 1; andlows that an upward flow through the valve Fig. 3 a longitudinal'section of the same. 'casing will result in the lifting of .the valve'yIn the drawings like numerals of referplug, and the extent of the risewill be proence indicate corresponding parts in the difportionate to therate of iow, thus the posi- 1 is the valve casing, which is preferablyline serves at any time to indicate therate formed in two parts,threaded together as of flow of fluid through the valve.` It isindicated at 2 in Fig. 3. In the lower part important that, in the eventVof cessationof of the casing is formed a valve seat 3 with flottr andthe drainage of the lower part of plug 4. The valve plug and valve seatare connected, that the upper parts of the line preferably of the frustoconical form shown, and of the valve casing should also be so thatlongitudinal movement of the valve drained, I therefore form a passage18 plug relative to the seat results in a gradual through the valve plug4, which passage is the two. rIhe valve plug is preferably kproing valveseat 19 in axial alinement with thev vided with an annular flange 5,forming a valve plug and the stem 7. Immediately shoulder adapted toengagev a shoulder 6 over the valve seat is a threaded opening 2O formedat the upper side of the valve seat in axial alinement with the valveseat anda small space isstill left between the tapered the valve stem 7Tliroughthe opening, besurface of the plug andthe seat. For exfore thevalve stem is screwed in position, ample, the diameter of the Vplug atany 1s introduced a ball 21 which co-operates plane of cross section maybe 1/64 of an with the seat to form a check valve, which in the sameplane. when pressure exists below the valveplug,

From the valve plug extend stems 7 and but which readily permits backflow in the 8, the stem 7 being guided in'a 'guide 9 event of a negativepressure existing below formed as a s pider cast inthe upper part of thevalve plug.

in a similar formed guide 10 cast inthe scale may be employed, and Ihave indicated lower part of the valve casing. The stem 8 such an indexon the glass plate 15 closing is cast with the valve plug, while thestem the opening on the front of the valve.

7 is removable for purposes which will here- What I claim is inafterappear. 1. Ina valve, the combination of a valve 105 An indicator 11 issecured to the stem 7 casing having a valve seat formed therein and islongitudinally adjustable thereon. and an indicator chamber'abovetheseat a Preferably this indicator is formed as a disk valve plugmovable, more or less, relative threaded on the lower part of the stemand to said seat and against the force of gravity f may be clamped afterit has been vadjusted casing forming a datum mark; a disk formbyrotating it on the stem. 'Ihe indicator ing an-indicator secured yto andabove the ferent gures. tion of the indicatorrelative to the datum iwhich is adapted to co-opera'te the valve the pipe line in which thevalve may. be 80` increase in the area of the opening between Y sodesigned as to present an upwardly fac- 8 5 8. These shoulderspreferably engage while into this opening is screwed ,the lower end of99 inch less than the diameter of the valve seat prevents directflowthroughv the passage,

the valve casing, while the stem 8 is guided In connection with thedevice a visiblel v100 provided with a set lscrew 12', whereby it byflow through the casing; a ledge on the'llO valve and extending-adjaeent -to the said ledgegand .a window .isn the wail -ltlieSilidieator chamber through which the said disk and datum mark arevisible,`

2. In a valve, the combination of a Valve easing having a valve seatformed vri-therein and an indicator Chamber above the seat; a valve plugmovable, moiie or less, melative to said seat andagainst the force ofgravity by flow Vthrough 'the casing; a Stem eX-tend ing up filoni thevalve; y:i guide vin the casing ,t-ending .ed/jacent toaifdledgm and aWindow inthe'wall ofthe-"indicator Chamber fthlaoiigh-which the saiddisk and ldatum mark are visible.

Signed at fllowntoqanada, lthis 9th day of October, 192471.

gs'ANfDILA-NDS. i

